[galaxy-user] Displaying MACS Peaks at UCSC

Hello, I am new to Galaxy and am trying to analyze some ChIP-Seq data. I groomed illumina FASTQ data and used Bowtie to map it to hg18. I then used MACS to call ChIP-Seq peaks; over 13,000 were identified. Analysis of individual peaks shows good consistency with ENCODE data sets on UCSC, so I know the ChIP-Seq worked. However, when I try to display the results at UCSC main I get the following error message on the UCSC browser: What am I doing wrong? Please advise. Thank you, Steven Okino